Lee Si-hyeong (Hangul:???) (born December 15, 2000) is a South Korean figure skater.
He is the 2017 South Korean national bronze medalist.
He has qualified to the free skate at four ISU Championships: the 2017 Four Continents Championships in Gangneung, South Korea, the 2017 World Junior Championships in Taipei, Taiwan, the 2018 Four Continents Championships in Taipei, and the 2018 World Junior Championships in Sofia.